ISO 6978-1:2003

Natural gas — Determination of mercury — Part 1: Sampling of mercury by chemisorption on iodine

Publication date: Oct 24, 2003

General information

Current stage: 90.93 Effective date: Dec 18, 2019

Originator: ISO

Owner: ISO/TC 193/SC 1

Type: International Standard

ICS: 75.060

Languages: English French

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Status: Published

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Scope

ISO 6978-1:2003 specifies a method for the determination of total mercury content in natural gas using a sampling method at pressures up to 40 MPa by chemisorption on iodine impregnated silica gel. This sampling method is suitable for the determination of mercury contents within the range of 0,1 microgram/m3 to 5 000 micrograms/m3 in natural gas. This method is applicable to sampled gas volumes containing less than 20 mg hydrogen sulfide and less than a total liquid hydrocarbon condensate of 10 g/m3 under the sampling conditions. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.

Life cycle

PREVIOUSLY

Revises
ISO 6978:1992

Replaces
ISO/DIS 6978-2

NOW

PUBLISHED
ISO 6978-1:2003
90.93 Standard confirmed
Dec 18, 2019

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